wasm: patch wasm_exec.js and wasm_exec_node.js from Go 1.18+ (#5483)

* wasm: patch wasm_exec.js and wasm_exec_node.js from Go 1.18+

Port this commit https://github.com/golang/go/commit/680caf15355057ca84857a2a291b6f5c44e73329 removing polyfills from `wasm_exec.js`, now the environment is expected to provide all the required polyfills.

`wasm_exec.js` now only provides stub fallbacks for globalThis.fs and globalThis.process.

All NodeJS specific code is now in a separate file `wasm_exec_node.js` with its required polyfills.

* feat: bump minimum node version to 22

Drops official support for NodeJS 18 for WASM by removing the provided polyfills in the `wasm_exec.js`.

Now the environment is expected to provide the polyfill if it is running on older NodeJS versions

The new minimum required version for WASM is NodeJS 22+.

* chore: removed wrong comment

`wasm_exec_node.js` no longer contains the polyfill for NodeJS 18

targets/wasm_exec_node.js

@@ -0,0 +1,32 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// This file has been modified for use by the TinyGo compiler.
+"use strict";
+
+if (process.argv.length < 3) {
+    console.error("usage: go_js_wasm_exec [wasm binary] [arguments]");
+    process.exit(1);
+}
+
+globalThis.require = require;
+globalThis.fs = require("fs");
+
+globalThis.performance = {
+    now() {
+        const [sec, nsec] = process.hrtime();
+        return sec * 1000 + nsec / 1000000;
+    },
+};
+
+require("./wasm_exec");
+
+const go = new Go();
+WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then(async (result) => {
+    let exitCode = await go.run(result.instance);
+    process.exit(exitCode);
+}).catch((err) => {
+    console.error(err);
+    process.exit(1);
+});